In general intersection of road level and railway track at the same level is referred as level crossing. Usually in urban areas the level crossings are looked after by highly trained professionals to monitor the train movements and close the railway gates. By doing so the traffic congestion appears and lead to loss of time. The solution for this kind of problem is to implement road under bridge technique. Further in this we have discussed about the methodology and problems faced during the process.

INTRODUCTION

Level crossings continue to be the weakest point, most unsafe, and source of accidents. Due to increase in train speed and non-observance of rules by road users, these are more critical. Although, the total number of accidents occurring on the Indian railways is showing a progressive decline, level crossing accidents are still hovering at around the same level. To reduce this one of the following three methods are used:

• Cut and cover method
• Box pushing method
• Restricted height girder method

In this we will discuss about Box Pushing Technology. Nowadays box pushing technology is mostly used when compared to other methods. This method is used as it is safe for construction in major traffic areas and busy junctions. In this technique, RCC boxes separated in segments are cast outside and pushed through heavy embankments of rail or road by jacking system. The thrust bed is prepared along with line and level of precast boxes. Later by applying hydraulic force these RCC box segments are pushed into the embankment and as the land available is less in cities these box segments are used as it acquires less space for construction. Therefore, establishing of this method is a good option where there is less land or space for constructing underpass.

The Technique

This method consists of constructing thrust bed. Then precast RCC box segments are placed over the thrust bed.

Road Under Bridges

The flow of traffic in both perpendicular directions which is above and below is said to be road under bridge.

Road Over Bridges

A bridge is structure which is built across the body of valley, water etc. for the free flow to traffic so that the obstruction can be avoided.